Bottle-stopper



(No Model.)

L. KALLING.

BOTTLE JSTOPPER. No. 537,979. Patented Apr. 23, 1895.

UNITED STATES PATENT OFFICE.

LEVIS KALLING, OF BALTIMORE, MARYLAND.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent N 0. 537,979, dated April 23, 1895.

Application filed September 10, 1894, Serial No. 522.539- (No model.)

To all whom it may concern.-

Be it known that I, LEWIS KALLING, of the city of Baltimore and State of Maryland, have invented certain Improvements in Bottle- Stoppers, of which the following is a specification.

In Letters Patent No. 523,474, granted to me on the 24th day of July, 1894, for bottle stoppers, I show and describe a bottle stopper which consists of a cylindrical piece of cork having its upper end and a part of the body, inclosed by an elastic cap. This cap is preferably made from a notched sheet metal disk which is stamped or drawn into a practically cylindrical shape around the cork, and provided with an annular groove near its upper end adapted to receive a forked extractor. Below this groove is another which, in the insertion of the stopper in the bottle mouth or throat, receives an annular bead situated on the inner surface of the throat, and the stopper is thereby held firmly in place. This bead does not however, prevent the withdrawal of the stopper by means of the extractor before referred to. The projecting bead in the bottle mouth reduces its effective size, and to some extent interferes with the emptying of the bottle of its contents; and to increase the size of the mouth or throat, would also call for an increase in the size of the under surface of the cork which is subjected to pressure when the contents of the bottle consist of carbonated liquids. In Letters Patent No. 523,475, granted to me on the same date, I obviate this apparent defect by changing the relative positions of the bead, and the groove, by placing the bead on the elastic cap. and the groove in the bottle.

In both the constructions described, it will be seen that two interlocking corrugated surfaces are employed to keep the stopper from being forced out by pressure within the bottle.

I now propose to dispense with the corrugated surfaces of the bottle stopper and cap, and also with the slits in the cap, and use a non-slitted cap having a smooth surface and a smooth bottle mouth, relying on the inherent elasticity of the cap to keep the stopper in place. I still employ a rubber or cork stopper over which the cap is crimped, and in addition to the stopper as described, I provide the bottle mouth with a seat upon which the end of the cork or rubber stopper rests to make a joint.

In the further description of the present invention which follows, reference is made to the accompanying drawings forming a part thereof, and in which-- Figure 1 is a sectional view of the upper part of a bottle provided with the improved stopper. Fig. 2 is a top view of the stopper alone. Fig. 3 is an exterior side view of the stopper.

Referring now to the drawings, A is the bottle neck and B the head.

The stopper consists of an elastic cylinder C preferably of cork or rubber,and an elastic metallic cap D which incloses the upper end of the cork cylinder and a part of its body. This cap is stamped, drawn or otherwise formed from a disk of sheet metal. It has an annular groovef to receive a forked extracting device similar to the one shown in Letters Patent No. 523,475, in dotted lines. The lower end or edge of the cap is turned or crimped inward into the cork or rubber cylinder, to complete the attachment of the two elements of the stopper, and the portion of the cork below the cap is made or left slightly larger than the inclosed portion, to form a joint byits expansion when brought into contact with the liquid contents of the bottle, or the gas arising therefrom.

It will be seen that with the exception of the annular groovef and the criinped edge or end of the cap, the device is straight throughout its length. A slight downward taper in the stopper would not, however, materially affect its function, but the stopper is intended to be a practically straight cylindrical device, depending upon friction of two smooth surfaces alone, for its hold within the bottle.

It will be seen that the throat of the bottle below the stopper is somewhat smaller in diameter than the mouth in which the stopper is situated. This construction forms a seat 9 on which the bottom surface of the cork portion of the stopper rests, thus forming a joint in addition to that surrounding the lower part of the cork.

I claim as my invention- 1. In combination with a bottle having a practically cylindrical mouth, and a seat be- ICO 3. A bottle stopper which consists of a piece of rubber or cork having its top and a portion of its cylindrical surface covered by a practically cylindrical cap free from corrugalow the mouth, a stopper formed of a practically cylindrical piece of cork or rubber, havingits head and a portion of its body inclosed by a practically cylindrical cap with a smooth or non-corrugated surface, substantially as I tions on the part thereof which comes into specified. contact With the bottle mouth, substantially 2. In combination with a bottle having a as specified.

practically cylindrical mouth, a stopper formed of a piece of rubber or cork which is partially inclosed by a practically cylindrical cap with a smooth or non-corrugated surface, substantially as specified.

LE \VIS K ALLING.

\Vitnesses:

DANL. FISHER, WM. T. HOWARD. 

